Diff of the two buildlogs:

--
--- b1/build.log	2025-01-28 22:05:42.208124937 +0000
+++ b2/build.log	2025-01-28 22:08:41.948058160 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Jan 28 10:04:23 -12 2025
-I: pbuilder-time-stamp: 1738101863
+I: Current time: Tue Mar  3 18:28:45 +14 2026
+I: pbuilder-time-stamp: 1772512125
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -24,52 +24,84 @@
 dpkg-source: info: applying 0001-Fix-autopkgtest-regression-with-ruby3.3.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/2011178/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos5-amd64.
+I: Changing host+domainname to test build reproducibility
+I: Adding a custom variable just for the fun of it...
+I: Changing /bin/sh to bash
+'/bin/sh' -> '/bin/bash'
+lrwxrwxrwx 1 root root 9 Mar  3 04:29 /bin/sh -> /bin/bash
+I: Setting pbuilder2's login shell to /bin/bash
+I: Setting pbuilder2's GECOS to second user,second room,second work-phone,second home-phone,second other
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build/reproducible-path'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
-  BUILD_ARCH='amd64'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  BASH=/bin/sh
+  BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:globskipdots:hostcomplete:interactive_comments:patsub_replacement:progcomp:promptvars:sourcepath
+  BASH_ALIASES=()
+  BASH_ARGC=()
+  BASH_ARGV=()
+  BASH_CMDS=()
+  BASH_LINENO=([0]="12" [1]="0")
+  BASH_LOADABLES_PATH=/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
+  BASH_SOURCE=([0]="/tmp/hooks/D02_print_environment" [1]="/tmp/hooks/D02_print_environment")
+  BASH_VERSINFO=([0]="5" [1]="2" [2]="37" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
+  BASH_VERSION='5.2.37(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='df340909988d4362896396498357eb2a'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  MAIL='/var/mail/root'
-  OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
-  PBCURRENTCOMMANDLINEOPERATION='build'
-  PBUILDER_OPERATION='build'
-  PBUILDER_PKGDATADIR='/usr/share/pbuilder'
-  PBUILDER_PKGLIBDIR='/usr/lib/pbuilder'
-  PBUILDER_SYSCONFDIR='/etc'
-  PPID='2011178'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=c8b21b86d57a42fe8b2441781bd2cc93
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-pc-linux-gnu
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnu
+  PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path
+  PBCURRENTCOMMANDLINEOPERATION=build
+  PBUILDER_OPERATION=build
+  PBUILDER_PKGDATADIR=/usr/share/pbuilder
+  PBUILDER_PKGLIBDIR=/usr/lib/pbuilder
+  PBUILDER_SYSCONFDIR=/etc
+  PIPESTATUS=([0]="0")
+  POSIXLY_CORRECT=y
+  PPID=3921500
   PS4='+ '
-  PWD='/'
-  SHELL='/bin/bash'
-  SHLVL='2'
-  SUDO_COMMAND='/usr/bin/timeout -k 18.1h 18h /usr/bin/ionice -c 3 /usr/bin/nice /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.Oy58ua9L/pbuilderrc_DvSx --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.Oy58ua9L/b1 --logfile b1/build.log docdiff_0.6.1-1.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://46.16.76.132:3128'
+  PWD=/
+  SHELL=/bin/bash
+  SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:posix
+  SHLVL=3
+  SUDO_COMMAND='/usr/bin/timeout -k 24.1h 24h /usr/bin/ionice -c 3 /usr/bin/nice -n 11 /usr/bin/unshare --uts -- /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.Oy58ua9L/pbuilderrc_VjSB --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.Oy58ua9L/b2 --logfile b2/build.log docdiff_0.6.1-1.dsc'
+  SUDO_GID=110
+  SUDO_UID=105
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://213.165.73.152:3128
 I: uname -a
-  Linux ionos1-amd64 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.9+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.9-1~bpo12+1 (2025-01-19) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/2011178/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -171,7 +203,7 @@
 Get: 58 http://deb.debian.org/debian unstable/main amd64 libruby amd64 1:3.3~3.1 [5012 B]
 Get: 59 http://deb.debian.org/debian unstable/main amd64 ruby3.3-dev amd64 3.3.6-1.1 [1030 kB]
 Get: 60 http://deb.debian.org/debian unstable/main amd64 ruby-dev amd64 1:3.3~3.1 [5148 B]
-Fetched 33.9 MB in 0s (81.1 MB/s)
+Fetched 33.9 MB in 5s (6589 kB/s)
 Preconfiguring packages ...
 Selecting previously unselected package sgml-base.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19843 files and directories currently installed.)
@@ -436,7 +468,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/docdiff-0.6.1/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-genchanges -S  > ../docdiff_0.6.1-1_source.changes
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/docdiff-0.6.1/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-genchanges -S  > ../docdiff_0.6.1-1_source.changes
 dpkg-buildpackage: info: source package docdiff
 dpkg-buildpackage: info: source version 0.6.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -446,7 +482,7 @@
  debian/rules clean
 dh clean
    dh_auto_clean
-	make -j20 distclean
+	make -j42 distclean
 make[1]: Entering directory '/build/reproducible-path/docdiff-0.6.1'
 rm -fr ChangeLog readme.en.html readme.ja.html index.en.html index.ja.html
 rm -fr  charstring_test.log  diff_test.log  difference_test.log  docdiff_test.log  document_test.log  view_test.log  viewdiff_test.log 
@@ -464,7 +500,7 @@
 /usr/bin/docbook-to-man debian/manpage.sgml > docdiff.1
 make[1]: Leaving directory '/build/reproducible-path/docdiff-0.6.1'
    dh_auto_test
-	make -j20 test
+	make -j42 test
 make[1]: Entering directory '/build/reproducible-path/docdiff-0.6.1'
 ruby -I./lib test/charstring_test.rb | tee charstring_test.log
 ruby -I./lib test/diff_test.rb | tee diff_test.log
@@ -473,24 +509,24 @@
 ruby -I./lib test/document_test.rb | tee document_test.log
 ruby -I./lib test/view_test.rb | tee view_test.log
 ruby -I./lib test/viewdiff_test.rb | tee viewdiff_test.log
-Loaded suite test/charstring_test
-StartedLoaded suite test/diff_test
+Loaded suite test/diff_test
+StartedLoaded suite test/difference_test
 Started
-Finished in 0.002805852 seconds.
+Finished in 0.01023589 seconds.
 -------------------------------------------------------------------------------
 1 tests, 4 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
 100% passed
 -------------------------------------------------------------------------------
-356.40 tests/s, 1425.59 assertions/s
-Loaded suite test/difference_test
+97.70 tests/s, 390.78 assertions/s
+Loaded suite test/view_test
 Started
-Finished in 0.010006847 seconds.
+Finished in 0.035158438 seconds.
 -------------------------------------------------------------------------------
 4 tests, 6 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
 100% passed
 -------------------------------------------------------------------------------
-399.73 tests/s, 599.59 assertions/s
-Loaded suite test/view_test
+113.77 tests/s, 170.66 assertions/s
+Loaded suite test/charstring_test
 StartedLoaded suite test/document_test
 StartedLoaded suite test/docdiff_test
 Started
@@ -643,6 +679,20 @@
 ?  "(2),1-2\n" + "cde\n" + "\n" + "cd[/X\n" + "Y]e\n" + "\n" + "----\n",
 ?  "3,3\n" + "e\n" + "[f/]\n" + "\n" + "e\n" + "[/F]\n" + "\n" + "----\n"]
 ===============================================================================
+Finished in 0.472254002 seconds.
+-------------------------------------------------------------------------------
+146 tests, 146 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
+100% passed
+-------------------------------------------------------------------------------
+309.16 tests/s, 309.16 assertions/s
+
+Finished in 0.461035849 seconds.
+-------------------------------------------------------------------------------
+117 tests, 117 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
+100% passed
+-------------------------------------------------------------------------------
+253.78 tests/s, 253.78 assertions/s
+
 F
 ===============================================================================
 Failure: test_to_tty_digest(TC_DocDiff_View)
@@ -665,7 +715,13 @@
 
 diff:
   ["----\n",
-   "1-2,(1)\n" + "\e[7;4;31ma\n" + "b\e[0mcd\n" + "----\n",
+   "1-2,(1)\n" + "\e[7;4;31ma\n" + "b\e[0mcd\n" + "----\n",Finished in 0.483459726 seconds.
+-------------------------------------------------------------------------------
+12 tests, 12 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
+100% passed
+-------------------------------------------------------------------------------
+24.82 tests/s, 24.82 assertions/s
+
 ?  "(2),1-2\n" + "cd\e[7;1;34mX\n" + "Y\e[0me\n" + "\n" + "----\n",
 ?  "3,3\n" + "e\n" + "\e[7;4;33mf\e[0m\e[7;1;32mF\e[0m\n" + "\n" + "----\n"]
 ===============================================================================
@@ -720,13 +776,7 @@
 -  "\e[7;1;32mF\e[0m\n" +
 -  "\n" +
 -  "----\n"]
-===============================================================================Finished in 0.345175098 seconds.
--------------------------------------------------------------------------------
-12 tests, 12 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
-100% passed
--------------------------------------------------------------------------------
-34.76 tests/s, 34.76 assertions/s
-
+===============================================================================
 F
 ===============================================================================
 Failure: test_to_user_digest(TC_DocDiff_View)
@@ -825,33 +875,19 @@
 ?  "(2),1-2\n" + "cde\n" + "\n" + "cd{+X\n" + "Y+}e\n" + "\n" + "----\n",
 ?  "3,3\n" + "e\n" + "[-f-]\n" + "\n" + "e\n" + "{+F+}\n" + "\n" + "----\n"]
 ===============================================================================
-Finished in 0.462104037 seconds.
+Finished in 0.711620002 seconds.
 -------------------------------------------------------------------------------
 51 tests, 67 assertions, 10 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
 80.3922% passed
 -------------------------------------------------------------------------------
-110.36 tests/s, 144.99 assertions/s
-
-Finished in 0.604108079 seconds.
--------------------------------------------------------------------------------
-146 tests, 146 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
-100% passed
--------------------------------------------------------------------------------
-241.68 tests/s, 241.68 assertions/s
-
-Finished in 0.608101942 seconds.
--------------------------------------------------------------------------------
-117 tests, 117 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
-100% passed
--------------------------------------------------------------------------------
-192.40 tests/s, 192.40 assertions/s
+71.67 tests/s, 94.15 assertions/s
 
-Finished in 2.017552457 seconds.
+Finished in 4.941760752 seconds.
 -------------------------------------------------------------------------------
 15 tests, 15 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
 100% passed
 -------------------------------------------------------------------------------
-7.43 tests/s, 7.43 assertions/s
+3.04 tests/s, 3.04 assertions/s
 make[1]: Leaving directory '/build/reproducible-path/docdiff-0.6.1'
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -936,12 +972,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3921500/tmp/hooks/B01_cleanup finished
 I: unmounting dev/ptmx filesystem
 I: unmounting dev/pts filesystem
 I: unmounting dev/shm filesystem
 I: unmounting proc filesystem
 I: unmounting sys filesystem
 I: cleaning the build env 
-I: removing directory /srv/workspace/pbuilder/2011178 and its subdirectories
-I: Current time: Tue Jan 28 10:05:41 -12 2025
-I: pbuilder-time-stamp: 1738101941
+I: removing directory /srv/workspace/pbuilder/3921500 and its subdirectories
+I: Current time: Tue Mar  3 18:31:36 +14 2026
+I: pbuilder-time-stamp: 1772512296